android - Calling MediaPlayer.PrepareAsync from VideoView -


i trying implement playlist of videos have smooth transition 1 video next. mediaplayer object has prepareasync() method seem prebuffer video it's ready play. how invoke prepareasync method videoview object? examples found mediaplayer either don't use videoview , seem create surface scratch. or examples use mediaplayer return parameter on videoview eventlisteners seem occur after videoview.play(). have access videoview's mediaplayer before invoking play method can invoke prepareasync() , later the play().

just user1023110 mentioned, videoview wrapper around mediaplayer. diving source code (since docs aren't useful @ all) confirmed internally calls prepareasync() in private method openvideo():

   private void openvideo() {     if (muri == null || msurfaceholder == null) {         // not ready playback yet, try again later         return;     }     // tell music playback service pause     // todo: these constants need published somewhere in framework.     intent = new intent("com.android.music.musicservicecommand");     i.putextra("command", "pause");     mcontext.sendbroadcast(i);      // shouldn't clear target state, because might have     // called start()     release(false);     try {         mmediaplayer = new mediaplayer();         if (maudiosession != 0) {             mmediaplayer.setaudiosessionid(maudiosession);         } else {             maudiosession = mmediaplayer.getaudiosessionid();         }         mmediaplayer.setonpreparedlistener(mpreparedlistener);         mmediaplayer.setonvideosizechangedlistener(msizechangedlistener);         mmediaplayer.setoncompletionlistener(mcompletionlistener);         mmediaplayer.setonerrorlistener(merrorlistener);         mmediaplayer.setoninfolistener(moninfolistener);         mmediaplayer.setonbufferingupdatelistener(mbufferingupdatelistener);         mcurrentbufferpercentage = 0;         mmediaplayer.setdatasource(mcontext, muri, mheaders);         mmediaplayer.setdisplay(msurfaceholder);         mmediaplayer.setaudiostreamtype(audiomanager.stream_music);         mmediaplayer.setscreenonwhileplaying(true);         mmediaplayer.prepareasync();         // don't set target state here either, preserve         // target state there before.         mcurrentstate = state_preparing;         attachmediacontroller();     } catch (ioexception ex) {         log.w(tag, "unable open content: " + muri, ex);         mcurrentstate = state_error;         mtargetstate = state_error;         merrorlistener.onerror(mmediaplayer, mediaplayer.media_error_unknown, 0);         return;     } catch (illegalargumentexception ex) {         log.w(tag, "unable open content: " + muri, ex);         mcurrentstate = state_error;         mtargetstate = state_error;         merrorlistener.onerror(mmediaplayer, mediaplayer.media_error_unknown, 0);         return;     } }

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